Pure laparoscopic liver resection for large malignant tumors: does size matter?

Area of Science:

• Hepatobiliary Surgery
• Minimally Invasive Surgery
• Surgical Oncology

Background:

• Laparoscopic liver resection (LLR) for large malignant tumors presents technical challenges.
• Limited data exist regarding the feasibility, safety, and oncologic outcomes of LLR for these cases.
• This study addresses the need for more evidence on LLR for large (≥ 5 cm) and giant (≥ 10 cm) malignant liver tumors.

Purpose of the Study:

• To assess the outcomes of laparoscopic liver resection (LLR) for large and giant malignant liver tumors.
• To evaluate the feasibility, safety, and oncologic efficiency of LLR in this patient cohort.
• To compare outcomes between large and giant malignant liver tumors undergoing LLR.

Main Methods:

• A retrospective review of a prospectively collected database of 422 LLRs performed between August 2003 and August 2013.
• Analysis of data from 52 patients who underwent LLR for large malignant tumors (≥ 5 cm).
• Subgroup analysis specifically for patients with giant tumors (≥ 10 cm).

Main Results:

• LLR was performed in 52 patients for large malignant tumors, with a mean diameter of 83 mm. Colorectal liver metastasis was the most common indication (42.3%).
• Median operative time was 240 minutes, with a median blood loss of 500 ml. Eight conversions (15.4%) and six complications (11.5%) were reported. No 90-day mortality occurred.
• Giant tumors showed significantly greater blood loss (p=0.002) and a trend towards longer operative time (p=0.052) but similar rates of conversion and complications compared to large tumors.

Conclusions:

• Laparoscopic liver resection (LLR) is a feasible and safe approach for managing large malignant liver tumors.
• LLR demonstrates acceptable morbidity and oncologic outcomes for large malignant liver tumors.
• For giant malignant liver tumors, LLR is associated with increased blood loss and operative time but not increased complications.